Sometimes I forget to do the raid, sometimes I think I’ve already done it, but I log in every day and I think I forget it at least once per week.
The little number above the arena always reminds me I haven’t completed 5 matches, the shop reminds me when I have boxes unopened.
I would like to see something similar for Raid. Even an exclamation mark similar to the Clan box when a reward is pending. Or if you made the raid button red until it was completed. (And while we’re at it, something similar to highlight there is an active Titan and that you have not hit it rather than having it buried through the clan interface.)
This may be more tricky or less well received, but I’d even like to see a day’s grace on raid. Maybe if you miss a day you can complete it on Monday. Or allow player’s to “catch up” on raid if they are behind a day.